I got a new pair of 12A medium. Love them. Got a great price on 14A fit 2, they are NOT the same size. The waist is definitely a BIT more roomy. 14a can slide straight off my hips while the 12a will stay, also the 12a will sit about 1/2 inch above my knee while the 14A cover part of my knee.
I had bought a 12a Large dirt cheap with the purpose to resell, but I tried them on just to see and the 14a fit 2 reminded me a lot of the size of the 12a Large.
In general I personally like the legs on the 12a better but they are hard to find these days in medium.
By what I am reading, I suppose the 14a fit 1 would be to long as well?